Prosthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China.
Paediatric Dentistry, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
Clin Exp Dent Res. 2020 Feb;6(1):59-68. doi: 10.1002/cre2.249. Epub 2019 Oct 18.
Eye tracking has been used in medical radiology to understand observers' gaze patterns during radiological diagnosis. This study examines the visual identification ability of junior hospital dental officers (JHDOs) and dental surgery assistants (DSAs) in radiographic and nonradiographic images using eye tracking technology and examines if there is a correlation.
Nine JHDOs and nine DSAs examined six radiographic images and 16 nonradiographic images using eye tracking. The areas of interest (AOIs) of the radiographic images were rated as easy, medium, and hard, and the nonradiographic images were categorized as pattern recognition, face recognition, and image comparison. The participants were required to identify and locate the AOIs. Data analysis of the two domains, entire slide and AOI, was conducted by evaluating the eye tracking metrics (ETM) and the performance outcomes. ETM consisted of six parameters, and performance outcomes consisted of four parameters.
No significant differences were observed for ETMs for JHDOs and DSAs for both radiographic and nonradiographic images. The JHDOs showed significantly higher percentage in identifying AOIs than DSAs for all the radiographic images (72.7% vs. 36.4%, p = .004) and for the easy categorization of radiographic AOIs (85.7% vs. 42.9%, p = .012). JHDOs with higher correct identification percentage in face recognition had a shorter dwell time in AOIs.
Although no significant relation was observed between radiographic and nonradiographic images, there were some evidence that visual recognition skills may impact certain attributes of the visual search pattern in radiographic images.
眼动追踪技术已应用于医学放射学，以了解观察者在放射诊断过程中的注视模式。本研究使用眼动追踪技术检查初级医院牙科医生（JHDO）和牙科手术助理（DSA）在放射影像和非放射影像中的视觉识别能力，并检查是否存在相关性。
9 名 JHDO 和 9 名 DSA 使用眼动追踪技术检查了 6 张放射影像和 16 张非放射影像。将放射影像的感兴趣区域（AOI）评为简单、中等和困难，而非放射影像则分为模式识别、面部识别和图像比较。参与者需要识别和定位 AOI。通过评估眼动追踪指标（ETM）和绩效结果，对两个领域（整个幻灯片和 AOI）进行数据分析。ETM 包含六个参数，绩效结果包含四个参数。
JHDO 和 DSA 在放射和非放射影像的 ETM 方面均无显著差异。JHDO 在所有放射影像（72.7%对 36.4%，p =.004）和放射影像 AOI 的简单分类（85.7%对 42.9%，p =.012）中识别 AOI 的比例明显高于 DSA。在面部识别中正确识别百分比较高的 JHDO，其 AOI 停留时间较短。
尽管未观察到放射和非放射影像之间存在显著关系，但有一些证据表明，视觉识别技能可能会影响放射影像中视觉搜索模式的某些属性。
